CVE-2025-4369 – “WordPress Companion Auto Update Stored Cross-Site Scripting”

CVE ID : CVE-2025-4369

Published : July 15, 2025, 10:15 a.m. | 16 minutes ago

Description : The Companion Auto Update plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘update_delay_days’ parameter in all versions up to, and including, 3.9.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Severity: 5.5 | MEDIUM

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